For those that can swing a Chromebook Pixel in the first place, the LTE model may be the wisest choice when it promises always-on data for a constantly connected machine. Anyone who can justify the $1,449 outlay will be happy to know that Google has quietly narrowed down the launch window: early orders should now ship by April 8th. Shoppers will still have to be Americans willing to latch on to Verizon's network for LTE, but the date leaves a mere two weeks before the release of what's unquestionably the highest-end (and priciest) Chrome OS system yet. Any takers?Filed u